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A method for preparing vitrified bond grinding wheel by liquid-phase raw material technology

A vitrified bond and raw material technology, applied in the direction of ceramic products, abrasives, manufacturing tools, etc., can solve the problems of inability to fundamentally refine the vitrified bond, uneven mixing, easy agglomeration, etc., and achieve the synchronization of grinding shape and surface Good stability and retention, good uniformity and uniform structure

Active Publication Date: 2019-01-01
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large surface energy of nano-oxide powders, they are easy to agglomerate and difficult to disperse. When various nano-powders are mixed, uneven mixing is likely to occur, and the agglomerated nano-powders will grow up during the sintering process, forming large Granular binders cannot fundamentally achieve the purpose of refining vitrified binders

Method used

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  • A method for preparing vitrified bond grinding wheel by liquid-phase raw material technology
  • A method for preparing vitrified bond grinding wheel by liquid-phase raw material technology
  • A method for preparing vitrified bond grinding wheel by liquid-phase raw material technology

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Effect test

Embodiment 1

[0049]

[0050] 1) Preparation of multi-component sol: According to the formula shown in the above table, Zn(NO 3 ) 2 ·6H 2 O, LiNO 3 , NaNO 3 , Al(NO 3 ) 3 9H 2 O, ZrOCl 2 ·8H 2 O was dissolved in 43.9 g of deionized water to make a mixed solution; weigh industrial grade SiO 2 Sol, slowly drop into the above mixed solution under the condition of uniform stirring, stir and mix on the constant temperature heating magnetic stirrer, set the temperature at 50 ° C, and dilute with 10% HNO 3 The solution adjusts the pH of the multi-component sol to be 2;

[0051] 2) Add 10vol% N,N-dimethylformamide to the multi-component sol, then add 2.16 grams of polynaphthalene-based superplasticizer, and mix well;

[0052] 3) In the multi-component sol prepared as described in 2, fix the rotating speed at 340r / min, add diamond abrasive (the quality of the abrasive accounts for 70% of the total mass of the forming grinding wheel), stir for 30min, and adjust the pH of the mixed slurry...

Embodiment 2

[0057]

[0058] 1) Preparation of multi-component sol: According to the formula shown in the above table, Zn(NO 3 ) 2 ·6H 2 O, LiNO 3 , NaNO 3 , Al(NO 3 ) 3 9H 2 O, ZrOCl 2 ·8H 2 O was dissolved in 44.2 g of deionized water to make a mixed solution; weigh industrial grade SiO 2 Sol, slowly drop into the above mixed solution under constant stirring conditions, stir and mix on a constant temperature heating magnetic stirrer, set the temperature at 55°C, adjust the pH of the multi-component sol to 2.5 with diluted ammonia solution;

[0059] 2) Add 10vol% N,N-dimethylformamide to the multi-component sol, then add 2.14 grams of naphthalene-based superplasticizer, and mix well;

[0060] 3) In the multi-component sol prepared as described in 2, the fixed speed is 400r / min, add diamond abrasive (the quality of the abrasive accounts for 75% of the total mass of the formed grinding wheel), stir for 30min, and adjust the pH of the mixed slurry to be 4 , Pour the obtained slu...

Embodiment 3

[0065]

[0066] 1) Preparation of multi-component sol: According to the formula shown in the above table, Zn(NO 3 ) 2 ·6H 2 O, LiNO 3 , NaNO 3 , Al(NO 3 ) 3 9H 2 O, ZrOCl 2 ·8H 2 O was dissolved in 45.4 g of deionized water to make a mixed solution; weigh industrial grade SiO 2 Sol, slowly drop into the mixed solution under stirring conditions, stir and mix on a constant temperature heating magnetic stirrer, set the temperature at 60°C, adjust the pH of the multi-component sol to 3 with diluted ammonia solution;

[0067] 2) Add 10vol% N,N-dimethylformamide to the multi-component sol, then add 2.11 grams of naphthalene-based high-efficiency water reducer, and mix well;

[0068] 3) In the multi-component sol prepared as described in 2, the fixed speed is 360r / min, add diamond abrasive (the quality of the abrasive accounts for 80% of the total mass of the formed grinding wheel), stir for 30min, and adjust the pH of the mixed slurry to 5 , Pour the obtained slurry int...

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Abstract

The invention discloses a method for preparing a ceramic bond grinding wheel with the liquid-phase raw material technology. The method includes the steps that silicon dioxide sol and a solution containing sodium nitrate, lithium nitrate, zirconium oxychloride, zinc nitrate and aluminium nitrate are mixed to be even, and the mixed sol is formed; the pH of the mixed sol is adjusted to be mixed with components containing an abrasive material to be even, and the mixed slurry is obtained; the pH of the mixed slurry is adjusted to be poured into a mold, heating is carried out, the mixed slurry is subjected to in-situ condensation solidification accordingly, and a blank body is obtained; the blank body is sequentially dried, demolded, subjected to rough machining, sintered and subjected to precision machining, and the ceramic bond grinding wheel is obtained. By means of the method, the coating rate of the bond for the abrasive material can be effectively increased, the microstructure of the grinding wheel is refined, and the structural homogeneity of the grinding wheel is improved.

Description

technical field [0001] The invention relates to a method for preparing a vitrified bonded grinding wheel, in particular to a vitrified bonded grinding wheel prepared by using liquid-phase raw material technology to completely cover the abrasive with fine and uniform structure, high strength, good mechanical properties and controllable porosity. An agent grinding wheel belongs to the field of material engineering. Background technique [0002] The sol-gel method is mainly used to prepare powders and coatings. At present, the relevant research situation at home and abroad is as follows: Corundum abrasives with uniform particles have been successfully prepared by using sol-gel technology. Saint-Gobain Group of France and Norton Corporation of the United States have developed corundum microcrystalline abrasives sintered with alumina sol through a special seeding gel system, the so-called s-g (Seeded-GelAbrasive) abrasives, whose fracture toughness is better than that of electro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/52C04B35/624C04B38/00B24D3/14B24D18/00
CPCB24D3/14B24D18/009C04B35/52C04B35/624C04B38/00C04B2235/3201C04B2235/3203C04B2235/3217C04B2235/3244C04B2235/3284C04B2235/3418C04B2235/606C04B2235/656C04B2235/77C04B2235/96C04B38/0074
Inventor 万隆李建伟刘莹莹
Owner HUNAN UNIV
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